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E. B. ALLEN HEEL TRIMMING MAGgINB.

Patented .13.11.31

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3 Sheets-Sheet 2.

(No Model.)

E. B. ALLEN.

EEEL TEIMMING MACHINE.

No. 877,284. lPatented Ja.11.31, 1888.

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3 Sheets-Sheet 3.

(No Model.)

E. B. ALLEN.

HEEL TRIMMING MACHINE.

No. 877,284. Patented Jan. 31, 1888.

ihvrran Starts EDYVARD i3. ALLEN, OF PORTLAND MAINE, ASSIGNOR TO JAMES V.

HEL-TRIMWING MACHINE.

SPECIFICATION forming' part of Letters Patent No, 377,284, dated January 31, 1888.

Application filed September 2T, 1887. Serial No. 250,800.

To LZZ 10)'0712/ it may concern:

Be it known that I, EDWARD B. ALLEN, of Portland, county of Cumberland, and State of Maine, have invented an Improvement in Heel`Trimming Machines, of which the following` description, in connection with the accompanying` drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to provide a novel mechanism for trimming heels of boots or shoes. I have also shown my improved machines as adapted to breast the trimmed heel while yet in the trimining-machine.'

ln accordance with my invention thc shoe the heel of which is to be trimmed is mounted upon a jack which is rotated automatically in one and then in the opposite direction, the jack having a pattern-plate against which bears a roll connected to a frame carrying the spindle upon which is mounted theheel-trimming cutter-blades, a cam controlling the po sition of the blades 'with relation to the shaft carrying them so as to properly shape the exterior of the heel or give to the same more or less ogee shape. The heel having been trimmed and thejack rotated back into its normal position,means have been provided to automatieally set in motion a heelbreasting knife-carrier, which breasts the heel.

My invention consists, essentially, in a heeltrimming machine, a rotating shaft having two or more cutting-blades pivoted thereon, combined with a rod and connections between it and the said blades, and a cam to actuate the rod to change the position of thc blades to alter or modify the curvature of the heel; also, a movable bed, a turn-table mounted thereon, a last carried by the turntable, and a rotating cam-plate, combined with a locking device or mechanism to clutch the cam-plate and turntable together; also, in a heeltrimming machine, a rotating` table, a series of turn-tables carried by it to receive two or more lasts, and a rotating cutter to trim the heel, combined with means to rotate the said lasts one at a time in the said rotating table and while the heel of the shoeis being acted upon by the rotating cutter; also, in a heel-trimming machine, the combination, with a partially-rotating last and a rotating heel-trimmer, of heel- (No model.)

breasting mechanism, substantially as will be described, to breast the heel after the same has been trimmed; also, in a heel-trimming mechanis1n,a heel-breasting mechanism and an intermediate clutch, combined with means to automatically set into operation the heel-breasting mechanism at the completion ofthe heeltrimming operation, all substantially as will be described.

Other features of my invention will be pointed out in the claims at the end of this specification.

Figurel in side elevation represents a sufficient portion of a machine for trimming and breasting heels to enable my invention to be understood; Fig. 2, a lefthand end View of Fig.1; Fig. 3, a section of Fig. l in the dot-ted line 00, looking tothe right; Fig. 4, a top view ofthe machine shown in Fig. l; Fig. 5, a detail of the collar which moves the trimminglever and the slide-rod 60, cooperating with the heel-breasting devices.

The frame-work A, of suitable shape to support the working parts, has a stud, A', upon which is loosely mounted a belt-wheel, A2, the hub ofthe said belt-wheel having a spur-gear, A3, which engages a clutclrgear, A4, of the same general construction as the clutch-gear shown as mounted loosely upon the shaft 8 in Patent No. 332,032. The clutchgear At runs loose on a slidevrod, d, or it may be on a sleeve loose thereon, and its teeth engage the teeth of and rotate a clutch-gear, A, loose on the shaft A7 of the hcel-breasting mechanism, to

be described.

The shaft A7, extended through suitable bearings ofthe framework, has at its front end a disk, a, provided with a crank-pin, a,which by a link, a2, is connected to a stud, a, applied to a screw-threaded rod, at, inserted through a slide, ci, adapted to move up and down in suitable guides, a, made in the front end of the frame-work, thelower end of the said slide ,having attached to itin an adjustable manner a breasting-knife, b.

The shaft A7 at its rear end (see Fig. 2) has keyed to it an arm, m, provided with a dog, m1", pivoted at G7 and acted upon by a springpressed pin, G8, which normally acts to keep a portion of the said dog in position to be engaged by the teeth m18 at the interior of IOO the ange of the said clutch gear A6, the said dog engaging the said teeth, except when in contact with a stop-shoe, m9, fast on a sliderod, 60. As herein shown, the breasting-knife b is clamped'by suitable bolts, b', to a block, b, made horizontally adjustable by a screwJ, in a block, b4, the said block b4 havingpref-v erably a dovetailed gland, b5, fitted into the lower end of the slideai" and made adjustable horizontally therein in a directionat right angles to that of the slide b2 by a screw, be. Thesescrews and blocks permit the breastingknife to be moved laterally and longitudinally in a horizontal direction, so that its edge may be put into proper position to correctly meet and breast the heel. The rot-ation of the screw a* changes the position of the stud ai with relation to the length of the slide a5, and consequently alters the vertical stroke of the slide a5 and itsattached heel-breasting cutter b.

The last upon which is mounted the shoe the heel of which isv to be trimmed is composed, as herein shown, of aheel part, B,and a toe part, B, adjustably connected by a rod,B2,

the said last being of usual construction. rlhe heel part of the last is provided with two holes to receive parallel pins B3, rising from a small turn-table, as B4, it having a collar to rest upon a shouldered opening made in and through a rotating last-carrying table,as Bf", the center.

of rotation of the said table being a stud or bolt, B6- Thistable, which may be rotated by hand, has a series of holesto receive similar turn-tables, so that while one turntable is being rotated during the trimming operation, as will be described, the operator or attendant may be applying or removing a shoe from a second last not then in operative position to be trimmed. The bed of the framework upon which the rotating table B5 rests is provided with a rotating plate, C, having a cam-ledge, C', along its edge for a part of its circumference. This cam-plate has a shank, O2, which `is extended below the bottom of the bed of the frame-work,and has secured to it a sprocket-wheel, C3. The shank C2 is bored and slotted to receive within it a sliding pin, C, attached at its lower end by a boltor other usual universal joint to a lever, B8, pivoted at B9, the said sliding pin having a cross-head, C5, provided with two studs, 2 2, which,when the outer end of the lever B7 is extended up through holes in thesaid cam-plate, enters holes in and rotates the turn-table B4 and the last thereon in one and then in an opposite direction 'with the cam-plate G. In the rotation of the cam-plate C the camledge C acts upon a roller-stud, c, connected to the lower end of a rod, c', extended up through the shaft C6, upon which, by a pin or stud, 5, are pivoted the blades d of the rotary heel-trimmer, the said rod c at its upper end having a stud, c?, which is connected by links 3 to studs 4,extending from the said blades d at one side their pivotal point 5, the said shaft C6 being forked or slotted at its upper end to receive the inner ends of the cutting-blades d, the latter being permitted to turn out and in upon the said stud 5. The vertical movement of the rod c by the cam C' causes the blades d to bel turned, so that their cuttingedges are so changed as to adapt them to give more or less curvature to the outer side of the heel, the said blades being most retracted into j the shaft C when the cutter is trimming the sides of the heel from the breast toward its rear part, and being turned out farthest from the center of the said shaft just as the rear side of the heel is being 'acted upon by the cutters d.

The yoke-like sleeve D, in which rotates the shaft C, has V-shaped projections d', which enter correspondingly-shaped guides, d2, atv tached to or forming part ofthe rod d3, referred to, the said yoke-likesleeve being thus free to be" adj usted vertically. The lower end of the sleeve D is rgrooved to receive a'carriage, dt, (shown by dotted lines, Fig. 1,) having a roller or other stud, d5, made adjustable in the foot of the said sleeve by means of a screw, de. The roll d5 in practice rests against the heelshaped pattern-plate di, attached to the lower endof the last, the adjustment of the stud compensating for plates of different sizes. The upper end of the shaft G6 has a belt-pulley, d, over which is extended a belt, d,which, passed about sheaves d1", is extended upward, the said belt in practice being passed about a pulley on a rotating shaft, thus rotating the shaft C6 independently of the other parts of the machine, in order that any desired rate of ICO speed may be gained for the shaft C6 and blades v d. The rod d3 isextended backward through a bearing, c', and a bearing, ex, fixed to the stud A', and near its rear end the said rod has fast on it a collar, e', between which and the bearing e is placed a spiral spring, e2, which normally keeps the rod da pressed forward, so that the roll d5 will rest against the pattern-plate di. The rod d3 receives loosely upon it a hollow shaft or sleeve having a hub, f, the periphery of which is provided with crossing screw-threadsfz. The hub f is surrounded bya collar, f3, havingastud, f4, provided at its inner end with a lozenge-shaped shoe, 4A, vofusual construction, concaved at its inner face and shown only by dotted lines at the right of Fig. 3, the said shoe entering and riding in the said screw-threads f2, the rotation of the hub moving the collar]v3 horizontally, the crossing grooves enabling the hub rotated in but one direction to carry the yoke forward and'then backward toy its starting-point; but to effect the reversal of the collar f3 the shoe on the arrival of the collar at the end of the hub must, it will be obvious, be partially turned, so as to enable the pointl of the shoe to change from one into the reverse screw-thread, or to enable the shoe to swing` from one into another groove in the direction of the arrows marked on the hub in Fig. l. To do this the stud fr4 has rmly bolted to it a short arm, f2, which, as the collar approaches the end vof its stroke, in every direction meets a stop, as f2s, and oscillates the stud f* and shoe for a short distance.

The collar f at its side opposite the shoe and piu f4 has a pin, 50, having loosely mounted upon it a square bloclgf, (shown best in Fig. 8,) which enters a slot, f7, in the upper' end of the'trimming-lever f8, pivoted at ff upon the frame-work, the lower slotted end of the said lever embracing a square swivel-bloel,j`w, mounted on a stud of a can riage,f, made to slide in guideways f1, attached to the frame-work.

The stud or carriage f12 has connected to it the opposite ends ot' a chain, j, which is cxtended over the sprocket-wheel C3, and also over a sprocket-wheel, f, loose on a stud, f1, connected with the framework, the vibration of the trimming-lever, as will be obvious, effecting the rotation of the spindle C2 in one and then in the opposite direction, thus rotating the last to present the heel of the shoe to the action of the rotating cutters or blades d, the trimming of the heel being done, however, when the last is being rotated in one direction and not in its backward direction.

rllhe rear end ot' the hollow shaft or sleeve having the hub f2 is extended backward through an upright of the frame far enough to receive upon it a pinion, m, which is eugaged and rotated by a toothed gear, m, having a diameter eight times larger than thatof the said pinion, to thus give tothe said hollow shaft or sleeve eight rotations to one of the clutchgear A. The hub nr of the gear m is mounted looselyT upon a stud, ma, and has at its opposite end apinion, m4, which is engaged by a toothed gear, m5, ot' the same diameter as the gear m. The gear m, fast on the hub or sleeve m, loose on the rod d, is provided with an arm, 10, having a dog, 1l, provided at its innersidetsee dotted lines, Fig. 1) with a tooth which enters the space bounded by the clutchgear B4, which tooth is at times permitted to engage one of the series of teeth 7 at the inner side ot' the rim of the continuously-rotating elutclrgear A4, the arm l() and gear m5 at such times rotating in unison with the said clutch-gear. The dog 1l is held out of engagement with the teeth 7 at all times, except when the trimming-lever is to be moved, by means of a stop-shoe, b2, attached to a rod, ai, provided with a bearing, 59, the said rod having a collar, 71 acted upon by a spiral spring, 7L', to normally keep the stop-shoe in such position as to act upon andhold the dog ll out of engagement with the said teeth 7 as the clutch -gear A rotates; but when it is desired to start the trimming-lever]CS to rotate the last, as described, the operator will place his foot upon a suitable treadle, which, by a link, 7L", turns an elbow-lever, h5, so that one end thereof in engagement with a pin, h6, on the rod n2 will push the rod to the left in Fig. l and remove the stop-shoe bZ from the dog ll, thus permitting the continuously rotating clutch-gear A4 to engage the said dog and rotate the arm l0 and the gear m5. The

jack having been rotated so that the cutter has acted from one corner of the heel-breast along` one side, about the rear part, and then about the other side of the licei to the opposite corner of the breast, the last is rotated in the opposite direction back to its startingpoint, leaving the heel in position to be breasted by the knife b. This stopping the jack is effected by the stop-shoe b2, which, immediately after the dog 11 engages the teeth 7, is moved back again into its original position by the spring h', the foot ofthe operator having been removed from the treadlc referred to, so that when the dog ll again arrives at the said stopshoe its end meets the stop-shoe and effects the disengagement of the dog from the rotating teeth 7 of the gear B4 and stops the rotation of the arm and gear mi. Just before the gear m5 in its rotation arrives in position to be stopped the pivoted blorkp, mounted on an upwardly-extended ear of the collar f, (see Figs. l and 3,) meets a cam, (55, attached to the frame-work, (see Fig. 4.) the said cam acting to turn the pivoted block p aside against its Spring 62 far enough to cover the hole p" (see dotted lines, Fig. 1) in the said ear just before the block p in the movement of the collar f3 to the left arrives at the end m of the arm ml, bolted to the rod 60, and thereafter, in the further movement of the collar f3 toward the lcft in Fig. l, the block p. acting against the arm lm7, pushes the rod GO with it to the left, removing the stopshoe m from the dog mm, permitting the latter to be engaged by the teeth m13 of the coniiuuously-rotating clutchgear A, the gear thereafter carrying with it the arm mh and shaft A7 for one Yfull rotation, at which time one end ofthe dog mm again a1'- rives in contact with the stop-shoe m", which releases the said dog from the teeth of the clutch wheel A, leaving the'shaft Al at rest.

The rod (it) between the frame-work A of the machine and the arm mT is surroui'ided by a spiral spring, 70, which normally acts to move the rod in a direct-ion opposite that given to it by the pivoted block p.

The stop-shoe m" (see Fig. l) is provided at its inner side with a cam projection, 1S,which as the dognmw arrives nearly to the lower end of the stop-slice strikes the said projection and causes the said stop-shoe, and with it the rod 60 and arm mi, to be moved to the left (see Figs. l and 4r) far enough to remove the projection m from contact with the block p, thus enabling the springp3 to again assume control of the block and push it aside to uncover the hole p, and as soon as the said dog passes the projection 1S the spring 7() acts to throw the stop-shoe m fully to the right, to be in the path of movement of the said dog at, to disengage it from the teeth m1S when the shaft A7 has completed one rotation, the finger m as the rod 60 is so moved entering the hole p".

The shaft Al is stopped with the crank-pin a in position to place the slide a5, carrying the heel-breasting knife Z) in its most elevated po- Sition.

IOO

Y vthe heel breasted.

As shown in Fig. l, it is supposed that the heel has been trimmed,and that the shoe is yet on the last and the latter in position to have As the slide a5 employed to move the breasting-knife b descends, a cam or incline, 42, thereon meets a roll, 41, on an arm, 40, extended forward from the upper end of the yoke D, (see Fig. 1,) and pushes the said yoke and rod ci3 back against the spring e2 until a latch, 46, pivoted on the frame,engages a pin or projection, 48, on the said yoke, this backward movement of the yoke D removing the heel-trim ming cutter out of the path of movement of the descending blade b. The heel having been breasted,the table b5 is turned to bring another shoe in position to be trimmed and breasted, and the operator then lifts the i latch 46 by hand, and through the rod a2 releases the dog 11, to start the hub fl, move the trimming-lever, and rotate the last. 4

I am aware that itis not new to provide a rotary cutter having fixed blades with an auX iliary blade attached to a segmental carriage, the said auxiliary blade being thrown into operation at certain stages of the rotation of the cutter to cut into the bottom of and deepen' thegroove in the heel only at the rear end of the heel, as in United States Patent to Glidden, No. 221,676, dated November 18, 1879.

I claim- 1. In a heel-trimming machine, a rotating shaft and two or more pivoted cutting-blades carried thereby, combined with a rod and links 4to connect the rod with each of the said blades and with a cam to actuate the rod to move all the said blades about their pivots during the rotation of the-said shaft and While the said blades are acting upon and shaping the heel, all the said blades acting to cut entirely around the heel from breast to breast, substantially as described. v

` 2. The movable bed B,atu1ntable mounted thereon, a last carried by the turn-table, and au rotating cam-plate, combined with the lock.- ing device or mechanism to .clutch the camplate and turn-table together, substantially as described. l

3. The rotating shaft C, its attached cutter, the yoke-like bearing in which the said shaft rotates, and cam-roll d5, combined with the partially-rotating last andpattern-plate di, substantially as described.

4. The rotating shaft C6, its attached cutter, the yoke-like bearing in which the said shaft rotates, and cam`roll d5, combined with the partially-rotating last and pattern-plate d7, and with the cam-plate having a camledge,C,

and a rod, c', actuated thereby to change the position of the blades cl, substantially as set` 4vided with a sprocket-wheel, combined with a chain and with a vibrating lever, fs, substantially as described.

7. In a heeltrimming machine, the combination, with a partiallyrotating last and a fixed rotating heel-trim mer, of heel-breasting mechanism, substantially as described, to

breast the heel after the same has been trimmed, as set forth.

8. The shoe-holding last, the shaftAl, slide a5, and intermediate connections, combined with the heel-breasting blade b, to operatesubstantially as described.

9. The rotating shaft A", the link ft2, the slide a5, and the screw a", combined with the stud a3, made adjustable with relation to or,

upon the said screw, and the hreasting-knife, substantially as and for the purpose set forth.

10. The reciprocating slide a5, combined with the blocks b4 and b2, the heel-breasting blade b', and with means to adjust them tol placethe blade in proper position, substantially as described.

. i 11. The rotating'clutch-gear A6, the shaft A7 the arm m12, its dog, stop-shoe, and rod 60 -and arm m7, combined with the collar f3 and with the spring p3 and pivoted block p, to operate substantially as described.

12. The heel-trimming mechanism and the heel-breasting mechanism, combined with an intermediate clutch automatically controlled as to its movements bythe heel-trimming mechanism,whereby the main shaft of theheelbreasting mechanism is started at the completion of the heel-trimming operation, substantially as described.

In testimony whereof I have signed my name to this specification inthe presence of two sub-` scribing witnesses.

j EDWARD B. ALLEN. Vitnesses:

G. W. GREGORY, C. M. GONE.

IOO 

